Resizing WebP MagickImage disposes it

[reima]

Magick.NET version

Magick.NET-Q8-AnyCPU 14.16.0

Environment (Operating system, version and so on)

Windows 11

Description

Loading the attached WebP image as a MagickImage works without an error. Resizing the image also seems to work, but unexpectedly disposes the MagickImage.

Note: I recognize that the WebP is corrupt (it is a partially restored deleted file). However my expectation would be that Magick.NET either throws an exception when loading the image or allows resizing the image without disposing it.

Steps to Reproduce

Run this code in a .NET 10 project:

using ImageMagick;
using System;

try
{
    using var image = new MagickImage("repro.webp");
    image.Resize(50, 50);
    Console.WriteLine($"Success ({image.Width} x {image.Height})");
}
catch (Exception ex)
{
    Console.WriteLine($"Failed: {ex}");
}

Observe that an ObjectDisposedException is thrown when accessing image.Width in line 8:

Failed: System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'MagickImage'.
   at ImageMagick.NativeInstance.get_Instance() in /_/src/Magick.NET/Native/NativeInstance.cs:line 20
   at ImageMagick.MagickImage.NativeMagickImage.Width_Get() in /_/src/Magick.NET/Generated/Magick.NET.SourceGenerator/ImageMagick.SourceGenerator.NativeInteropGenerator/MagickImage.g.cs:line 5053
   at ImageMagick.MagickImage.get_Width() in /_/src/Magick.NET/MagickImage.cs:line 834
   at Program.<Main>$(String[] args) in F:\Source\.local\Magick.NET\MagickTest\Program.cs:line 8

Images

repro.webp

[dlemstra]

Thanks for reporting this. The image fails to load but it is not reporting an error. I just pushed a fix to the ImageMagick repository to make sure this will be fixed in the next release.